NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Experimental Biology (IJEB) >
IJEB Vol.45 [2007] >
IJEB Vol.45(05) [May 2007] >


Title: Movement and bioaccumulation of chromium in an artificial freshwater ecosystem
Authors: Ramoliya, Jignesh
Kamdar, Ashish
Kundu, Rahul
Keywords: Bioaccumulation
Cr (VI)
Ecosystem
Fish organs
Issue Date: May-2007
Publisher: CSIR
Abstract: In the present study, a small fresh water aquatic ecosystem was created into a small test tank to evaluate the movement and bioaccumulation of Cr (VI) through water, sediment, a macrophyte Hydrilla, small fish guppy, and few key organs of magur, Clarias batrachus. The Cr (VI) intoxication was imposed of as a single dose of 30 mg/l concentration for a wide range of exposure durations like 1, 7, 14 and 21 days. After 1 day of exposure the total Cr (VI) load was very high in the water and sediment samples (5.187 µg/ml and 23.332 µg/g respectively) which were decreased with increasing exposure durations over their respective controls. In samples of macrophyte, Cr (VI) concentration showed a gradual increasing trend from 6.1797 µg/g in control to 21.1903 µg/g in 1 day exposure and reached up to 24.635 µg/g after 21 days exposure. In guppy, the Cr (VI) bioaccumulation showed an increasing trend but the rate was not statistically significant. However, in magur, the Cr (VI) uptake showed a significant gradual and increasing trend with increasing exposure durations in liver, brain, intestine and muscular tissues than gill and kidney over their respective controls. The movement of the Cr (VI) was found to be from sediment to water during pre-treatment phase, after intoxication, from water to macrophyte and to other phytoplankton and zooplankton. It then accumulated in the primary consumer guppy and finally moved to the secondary consumer the magur following the food web. The results reveal that the rate of movement and bioaccumulation of Cr (VI) varied from organism to organism and in C. batrachus, from tissue to tissue.
Page(s): 475-479
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.45(05) [May 2007]

Files in This Item:

File Description SizeFormat
IJEB 45(5) 475-479.pdf45.52 kBAdobe PDFView/Open
 Current Page Visits: 461 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 557623 since 06-Feb-2009  Last updated on 15-Jul-2014Webmaster: nopr@niscair.res.in